$OpenBSD: patch-extern_carve_include_carve_geom_hpp,v 1.1 2012/02/26 20:37:26 pascal Exp $
--- extern/carve/include/carve/geom.hpp.orig	Sat Feb 18 11:45:47 2012
+++ extern/carve/include/carve/geom.hpp	Sat Feb 18 11:46:00 2012
@@ -21,6 +21,9 @@
 
 #include <vector>
 
+#undef _N
+#undef _C
+
 namespace carve {
   namespace geom {
 
